[mythtv-users] Help with IVTV 2.0 Settings

[zardoz at zardoz.ath.cx]

following works perfect in PAL-country,although I don't have an epia no more.
i am on ivtv 0.3-something

root at mythtv:/myth/music # ivtvctl -C
ioctl: IVTV_IOC_G_CODEC
Codec parameters
aspect      : 2
audio       : 0x00e9
bframes     : 3
bitrate_mode: 0
bitrate     : 4500000
bitrate_peak: 6000000
dnr_mode    : 0
dnr_spatial : 0
dnr_temporal: 0
dnr_type    : 0
framerate   : 1
framespergop: 12
gop_closure : 1
pulldown    : 0
stream_type : 0


On Wednesday 10 November 2004 15:35, Mike Wood wrote:
> Hey gang, I'm looking for advice on the parameters everyone's using with
> the IVTV drivers.  I just rebuilt my backend machine with Gentoo, 2.6.9
> kernel and installed IVTV-0.2.0-rc2n.  It was time to move on from
> RH9!!  :-)  I live in NTSC country and when I go to watch TV, or record
> something and then watch it later I get pretty badly garbled video.  It
> looks like the default Codec Parameters in IVTV these days are coming
> up like this:
>
> Codec parameters
> aspect      : 2
> audio       : 0x00e9
> bframes     : 3
> bitrate_mode: 0
> bitrate     : 4500000 (set to this value by Mythtv)
> bitrate_peak: 6000000  (set to this value by Mythtv)
> dnr_mode    : 0
> dnr_spatial : 0
> dnr_temporal: 0
> dnr_type    : 0
> framerate   : 0
> framespergop: 15
> gop_closure : 1
> pulldown    : 0
> stream_type : 0
>
> I tried changing dnr_spatial & dnr_temporal both to a value of 8 (right
> in the middle) and that seems to clear up th garbled video, but instead
> it seems to be skipping a lot of frames, so those settings aren't
> working either.  I also tried setting dnr_mode to 3, but that didn't
> help with the garbled video.  So, rather than experiment with 1000
> combinations of values, I thought I'd ask the experts.  What's everyone
> using?  Oh, btw, I'm capturing at 720x480 and playing back on a EPIA
> using Unichrome drivers, in case that matters.  I know my Epia setup is
> ok, it worked before I upgraded the backend.
>
> Any thoughts appreciated....
> Mike